Firmware sends capture buffers with 0 filled length which are not to be displayed and should be dropped by client. To achieve the same, add V4L2_BUF_FLAG_ERROR to such buffers by making sure: - These 0 length buffers are not returned as result of flush. - Its not a buffer with LAST flag enabled which will also have 0 filled length.
Cc: stable@vger.kernel.org Fixes: d09100763bed ("media: iris: add support for drain sequence") Acked-by: Vikash Garodia quic_vgarodia@quicinc.com Tested-by: Neil Armstrong neil.armstrong@linaro.org # on SM8550-QRD Tested-by: Neil Armstrong neil.armstrong@linaro.org # on SM8550-HDK Tested-by: Neil Armstrong neil.armstrong@linaro.org # on SM8650-QRD Tested-by: Neil Armstrong neil.armstrong@linaro.org # on SM8650-HDK Signed-off-by: Dikshita Agarwal quic_dikshita@quicinc.com --- drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c b/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c index 4488540d1d410b58af02ab82a3238ccbe40f7093..d2cede2fe1b5a82cbd4dd399860c43ef044d687f 100644 --- a/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c +++ b/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c @@ -378,6 +378,11 @@ static int iris_hfi_gen2_handle_output_buffer(struct iris_inst *inst,
buf->flags = iris_hfi_gen2_get_driver_buffer_flags(inst, hfi_buffer->flags);
+ if (!buf->data_size && inst->state == IRIS_INST_STREAMING && + !(hfi_buffer->flags & HFI_BUF_FW_FLAG_LAST)) { + buf->flags |= V4L2_BUF_FLAG_ERROR; + } + return 0; }